$(function(){
	var height = document.body.scrollHeight;
	var mainHeight = (height-65-93-50-15)+ "px";
	$("#header").siblings(".main").css("min-height",mainHeight);
	console.log("屏幕分辨率的高 = " + window.screen.height);
	console.log("网页可见域高 = " + document.body.clientHeight+","+document.body.offsetHeight);
	console.log("屏幕可见工作域高 = " + window.screen.availHeight);
	console.log("网页正文全文高 = " + document.body.scrollHeight);
})